Printable Version of Topic

Posted by: last337 Jan 13 2013, 08:48 AM

I got my verbs dialed in pretty darn good yesterday. I only had time for a short test drive, not long enough to pull plugs for inspection. One thing I did notice is a whistling noise coming from carbs when engine was under a load. No backfiring or popping so I'm not sure what this indicates.

Posted by: Dr Evil Jan 13 2013, 09:20 AM

It may be the normal "trumpet" of carbs. Is this the first you have driven a carbed car? I have to ask, just to rule out some things.

Posted by: Vacca Rabite Jan 13 2013, 10:07 AM

Yeah, carbs make a lot of noise. At above 4k rpm my old webers would be howling. Fun on short drives.

Posted by: last337 Jan 13 2013, 10:27 AM

Yes, this is first carbed car I have driven in years and def first air cooled vehicle. I find it has a nice lope to it when idling at around 900rpm. When it comes up under load it whistles around 2500 then has a nice sound around 3k. I just want to make sure I'm not running too lean but I guess I won't know till I check plugs. I have all carbs just above falling off with mix screw and each pulling about 3.5-4 on STE reading. Like I said, it has a nice lope but still a smooth idle not shaky

Posted by: bandjoey Jan 13 2013, 10:30 AM

Dellortos? They have a slot in the base that whistles unless you use a special gasket to seal it or what many do is epoxy the grove solid.

Posted by: last337 Jan 13 2013, 11:18 AM

QUOTE(bandjoey @ Jan 13 2013, 10:30 AM)

Posted by: last337 Jan 13 2013, 04:26 PM

Is that just the way things will sound with carbs? Is that lope normal or could it indicate a different can? I'd like to know what cam I have. Is there a way to know looking at valve train or would I have to open things up?

Posted by: vw505 Jan 13 2013, 08:38 PM

Ya, I was going to say some carbs just whistle, my webber 44's bark.